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'{{Infobox Windows build |buildtag = 6.0.4081.main.040503-1625 |family = nt |version = 6.0 |build = 4081 |lab = main |revision = |build of = [[Windows Longhorn]] |image = 4081-emptydesktop.png |arch = x86 |compiled = 2004-05-03 |timebomb = 2004-10-30 |winver = Longhorn4081Winver.png |sku = Professional |key = TCP8W-T8PQJ-WWRRH-QH76C-99FBW |rivals = {{Rivals|TCB=http://www.thecollectionbook.info/windows/vista/4852}} }} '''Windows Longhorn build 4081''' is a Milestone 7 build of [[Windows Vista|Windows Longhorn]]. On 23 January 2020, this build was listed in a BetaArchive thread by [[UX.Unleaked]] blog founder Grabberslasher to be released to the aforementioned site's FTP server. This build was released on 27 January 2020 in the fourth set of their 33 Longhorn/Vista builds along with [[Windows Vista build 5098|build 5098]].<ref>https://www.betaarchive.com/forum/viewtopic.php?t=40726</ref> ==Changes== === Windows Setup === As a last-resort effort in containing Longhorn's increasing feature creep, each aspect of the operating system is now assembled from a main set of packages containing individual components. These components are located in a repository located at the root of the operating system installation image (<code>build\filerepository</code>), complemented by a central "dictionary" of components (as <code>build\repository\index.hiv</code>). As a majority of features were not added to either the Enterprise Server and Professional edition's component manifests at the time of compilation, most features found in earlier pre-reset builds are absent by default. Certain missing features can be installed by making use of the Component Manager (<code>cm.exe</code>) command-line utility. Verbose boot mode is no longer enabled during the second stage of setup. This would be later re-enabled in post-reset builds, starting from [[Windows Vista build 5308]]. === Miscellaneous === *ClearType font anti-aliasing has been disabled. *The default MS Shell Dlg 2 font substitute (located in the <code>HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontSubstitutes</code> key) has been changed to [[w:Microsoft Sans Serif|Microsoft Sans Serif]]. ==Bugs and quirks== === Installation === As typical for componentized builds, it tends to take a long time to install and can be unstable. ====Upgrade==== Attempting to upgrade from other builds is not possible as one of two outcomes may occur: #A [[bugcheck]] with error code <code>0x7E</code> after the second reboot. This is commonly observed when trying to upgrade from non-componentized builds, such as 4074 (via a registry tweak that reports it as a componentized build). #An error during the file copy phase. ==== WinPE ==== The mouse driver in this build's WinPE does not function on specific hardware configurations or hypervisors, and may require a keyboard to navigate through the installation procedure. This issue appears to be largely related to using a PS/2 mouse, as most ordinary USB mice appear to function properly in setup. === [[WordPad]] === An error with <code>Failed to create empty document</code> will occur, therefore preventing [[WordPad]] from starting. This bug persists until [[Windows Longhorn build 4087|build 4087]]. === [[Outlook Express]] === A registry errors and certain dependencies on [[WinFS]] will occur, therefore preventing [[Outlook Express]] from starting. This bug persists until [[Windows Longhorn build 4093 (main)|build 4093]]. === Themes === The [[Windows Classic]] style cannot be applied as there are no color schemes defined in the registry. This can be fixed by using a [https://archive.org/details/classic-theme-fix-for-longhorn-408x-builds registry modification] . === Explorer === * CD and DVD drives behave like local disks. As a result of this, the system continuously throws out notifications about low disk space. * Help and Support crashes Explorer. * Explorer will crash after adding the display tile in sidebar and won't launch again. A workaround is to create a new account via <code>cmd</code>. === Control Panel === *The Hardware and Devices folder does not open. *By default, the Sounds Control Panel applet is missing. It is possible to port <code>mmsys.cpl</code> from another build to the <code>WINDOWS\SYSTEM32</code> directory in order to get the control panel applet to work. *[[Task Scheduler]] from Control Panel shows a nameless folder and generic folder icon. *By default, the Phone and Modem Options Control Panel applet name is empty. *Computer Management displays script errors due to missing registry entries. *Device Manager has a bug where drivers can't be updated as the Hardware Wizard Control Panel applet is missing. Drivers can be installed via the <code>devcon</code> utility from the [[Windows XP]] Driver Development Kit (DDK). === Creating folders === The option to create folders by right-clicking and selecting New doesn't work as the Folder entry is missing. Apply the following registry key to fix this problem: <syntaxhighlight lang="registry"> Windows Registry Editor Version 5.00 [HKEY_CLASSES_ROOT\.Folder] @="Folder" </syntaxhighlight> === DirectX === Although the [[Desktop Window Manager]] is present and can be activated by pressing {{key press|Ctrl|⇧ Shift|F9}} as in [[Windows Server 2008 build 4066]], it will result in a black screen and close due to a broken DirectX installation. It can fixed via the instructions listed on the [[Windows Aero#Windows Longhorn builds 4066 to 4082|Windows Aero]] page. === Graphics === Enable VGA Mode after installing video drivers or the system will result in a [[blue screen of death]] with an error code of <code>0x000000B4</code>. === Windows Product Activation === The Windows Product Activation component is missing due to the componentization. An incomplete rewritten one in .NET-managed code and Avalon would be reintroduced in [[Windows Longhorn build 4093 (main)|build 4093]]. === Safe mode === The [[Safe mode]] functionality does not work in this build and results in an <code>INACCESSIBLE_BOOT_DEVICE</code> bugcheck with code <code>0x0000007B</code>. This is because the <code>SafeBoot</code> key, located at <code> HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control</code>, is largely incomplete and lacks most entries necessary for Safe Mode to work. Restoring the key from an earlier build with working safe mode allows this build to boot properly, but the video driver will not initialize properly. As a result, the operating system will freeze as it transitions into graphical mode, so Safe Mode is currently not known to work on these pre-reset Longhorn componentized builds. === 16-bit application support === 16-bit Windows applications will not open as 16-bit application support is broken in this build. However, 16-bit DOS programs can still be started through <code>ntvdm.exe</code>. === Windows Help === Related to above, the 16-bit version of Windows Help, <code>winhelp.exe</code> will not start with an <code>C:\WINDOWS\winhelp.exe is not a valid Win32 application</code> error. ==Gallery== <gallery> File:Longhorn40424093Boot.png|Boot screen File:Longhorn4081Desktop.png|Desktop with winver File:LH4081-Systempropertiesandwinver.png|System properties and winver File:LH4081-BlueLunaTheme.png|Blue Luna theme File:LH4081-OliveGreenLunaTheme.png|Olive Green Luna theme File:LH4081-SilverLunaTheme.png|Silver Luna theme File:LH4081-ClassicTheme.png|Windows Classic theme File:LH4081-SlateTheme.png|Slate theme File:LH4081-JadeTheme.png|Jade theme File:WindowsLonghorn-6.0.4081-DWM.png|Default DWM theme File:Longhorn build 4081 Jade with Aero UI.png|Jade theme with some Aero UI File:4081 Aero.png|[[User:Lucas Brooks/RealAero|RealAero]] theme with MILExplorer File:4093 BSOD.png|System crash (usually appears after attempting to load Safe Mode) File:SafeLonghorn.PNG|Safe to shutdown screen </gallery> === Setup === <gallery> 4086 Lab03dev setup.png|Setup 4081 Product Key.png|Product key 4081 EULA.png|EULA 4081 ReviewAndAdjust.png|Review and adjust 4081 DiskPartitioning.png|Disk partitioning 4081 Copying Files.png|Copying files 4081 Restarting.png|Restarting 4081 Hardware Portion.png|Hardware portion </gallery> ==References== {{reflist}} [[Category:Windows Longhorn builds]]'